Home / 211,298,548.85-291,548,332.40-121,988,945.40

Finding the Fourth Proportional to 211,298,548.85, 291,548,332.40 and 121,988,945.40

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Solution

The fourth proportional to 211,298,548.85, 291,548,332.40 and 121,988,945.40 is: 168,319,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,298,548.85 : 291,548,332.40 = 121,988,945.40 : x
  2. Step 2: Convert to fraction form
    211,298,548.85/291,548,332.40 = 121,988,945.40/x
  3. Step 3: Cross multiply
    211,298,548.85x = 291,548,332.40 × 121,988,945.40
  4. Step 4: Simplify right side
    211,298,548.85x = 35,565,673,600,536,960
  5. Step 5: Solve for x
    x = 35,565,673,600,536,960/211,298,548.85
  6. Step 6: Final answer
    x = 168,319,535.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.